Finding the Fourth Proportional to 878,753.76, 1,212,622.96 and 491,502.07
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Solution
The fourth proportional to 878,753.76, 1,212,622.96 and 491,502.07 is: 678,240.85
Step by Step Solution
- Step 1: Write the proportion equation
878,753.76 : 1,212,622.96 = 491,502.07 : x - Step 2: Convert to fraction form
878,753.76/1,212,622.96 = 491,502.07/x - Step 3: Cross multiply
878,753.76x = 1,212,622.96 × 491,502.07 - Step 4: Simplify right side
878,753.76x = 596,006,694,969.53 - Step 5: Solve for x
x = 596,006,694,969.53/878,753.76 - Step 6: Final answer
x = 678,240.85
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.